"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : 极致RTO-硬件故障类
Case Name   : 开启极致RTO，业务压力后进行数据导入导出过程中，备机磁盘满故障后恢复；业务压力后，关闭极致RTO，主备数据一致
Create At   : 2020/10/15
Owner       : @peilinqian
Description :
    1、开启极致RTO
    2、运行TPCC
    3、查询主备状态
    4、进行数据导入
    5、进行数据导出
    6、导出过程中，注入磁盘满故障
    7、查询主备状态
    8、查看导出进程状态
    9、等待10S，恢复故障，重启备机
    10、查询主备状态，restore进程是否异常
    11、restore执行完成后，关闭极致RTO
    12、查询主备数据是否一致
    13、运行TPCC
Expect      :
    1、开启极致RTO成功
    2、运行TPCC成功
    3、查询主备状态正常
    4、进行gs_dump成功
    5、开始进行gs_restore
    6、注入磁盘满故障成功
    7、等待10S，查询主备状态正常
    8、restore进程正常
    9、等待10S，恢复备机故障正常
    9、重启备机成功
    10、查询主备状态正常
    10、restore进程正常，执行成功
    11、restore执行完成后，关闭极致RTO成功
    12、查询主备数据一致
    13、执行TPCC成功
History     :
    modified：2021-3-9 by 5328113;主备同步方法调用修改，增加超时等待时间；
    modified：2021-3-9 by 5328113;修改dump文件路径；
    modified：2021-2-5 by 5328113;guc参数还原时指定还原值
    modified:2020-12-14; by 5328113;修改restore指定新数据库，以防用例失败影响tpcc库及tpcc运行；
    modified:2021-1-28 by 5328113;删除start成功断言，删除不必要tpcc
"""

import os
import time
import unittest

from testcase.utils.ComThread import ComThread
from testcase.utils.Common import Common
from testcase.utils.CommonSH import *
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger
from yat.test import Node
from yat.test import macro


class ExtremeRto(unittest.TestCase):
    nodes_tuple = ('PrimaryDbUser', 'Standby1DbUser', 'Standby2DbUser')

    @RestartDbCluster(*nodes_tuple)
    def setUp(self):
        self.log = Logger()
        self.log.info(
            '----Opengauss_Reliability_RTO_Hardware_Disk_Case003:初始化----')

        self.pri_root = Node(node='PrimaryRoot')
        self.pri_dbuser = Node(node='PrimaryDbUser')
        self.sta1_root = Node(node='Standby1Root')
        self.sta1_dbuser = Node(node='Standby1DbUser')
        self.sta2_dbuser = Node(node='Standby2DbUser')
        self.pri_sh = CommonSH('PrimaryDbUser')
        self.sta_1_sh = CommonSH('Standby1DbUser')
        self.sta_2_sh = CommonSH('Standby2DbUser')
        self.com = Common()
        self.constant = Constant()
        self.tpcc_path = macro.TPCC_PATH
        dump_file_name = 'test_pid.tar'
        self.parent_path = os.path.dirname(macro.DB_INSTANCE_PATH)
        self.file_name = os.path.join(self.parent_path, dump_file_name)

        self.log.info("-----创建restore数据库----")
        self.new_db_name = 'restore_db'
        self.create_db_cmd = f'drop database if exists {self.new_db_name};' \
            f'create database {self.new_db_name};'
        self.drop_db_cmd = f'drop database {self.new_db_name};'
        create_db_result = self.pri_sh.executDbSql(self.create_db_cmd)
        self.log.info(create_db_result)
        self.assertIn(self.constant.CREATE_DATABASE_SUCCESS_MSG,
                      create_db_result)
        self.node_num = self.com.get_node_num(self.pri_root)
        self.log.info(self.node_num)
        self.max_time = 1200
        self.min_time = 300

    def test_main(self):
        try:
            self.log.info('----1、开启极致RTO----')
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'replication_type=1')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_parse_workers=4')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_redo_workers=4')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'hot_standby=off')
            self.assertTrue(msg)
            # 重启数据库配置文件生效
            self.pri_sh.stopDbCluster()
            time.sleep(2)
            self.pri_sh.startDbCluster()

            self.log.info('----查看主机query，同步是否正常----')
            self.pri_sh.check_location_consistency('primary',
                                                   self.node_num,
                                                   self.min_time)
            self.log.info('----查询主备状态----')
            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

            self.log.info('----2、进行gs_dump----')
            dump_result = self.pri_sh.dumpFile(self.file_name,
                                               get_detail=False)
            self.log.info(dump_result)
            self.assertTrue(dump_result)

            self.log.info('----3、进行gs_restore----')
            restore_thread = ComThread(self.pri_sh.restoreFile,
                                       args=(self.file_name, '', True,
                                             self.new_db_name,))
            restore_thread.setDaemon(True)
            restore_thread.start()
            time.sleep(3)

            self.log.info('----4、注入磁盘满故障----')
            self.log.info("----获取备机磁盘信息 ----")
            df_cmd = f"df -h {macro.DB_INSTANCE_PATH}"
            self.log.info(df_cmd)
            df_result = self.sta1_root.sh(df_cmd).result()
            self.log.info(df_result)
            self.DISK_NAME = df_result.splitlines()[-1].split()[0].strip()
            self.log.info("----注入磁盘满故障 ----")
            inject_cmd = f'rfile_full (diskname) values ({self.DISK_NAME})'
            inject_result = self.com.cfe_inject(self.sta1_root, inject_cmd)
            self.log.info(inject_result)
            success_msg = self.constant.CFE_DISK_FULL_SUCCESS_MSG
            self.assertIn(success_msg, inject_result)

            self.log.info("----获取备机磁盘占用情况 ----")
            df_cmd = f"df -h {macro.DB_INSTANCE_PATH}"
            self.log.info(df_cmd)
            df_result = self.sta1_root.sh(df_cmd).result()
            self.log.info(df_result)
            self.USED_PERCENT = df_result.splitlines()[-1].split()[4].strip()
            self.assertTrue(self.USED_PERCENT == '100%')

            self.log.info('----等待10S，查询主备状态----')
            time.sleep(10)
            self.pri_sh.getDbClusterStatus('status')

            self.log.info('----restore进程是否异常----')
            restore_ps_cmd = 'ps ux | grep gs_restore | grep -v grep'
            self.log.info(restore_ps_cmd)
            restore_ps_result = self.pri_dbuser.sh(restore_ps_cmd).result()
            self.log.info(restore_ps_result)

            self.log.info('----5、等待10S，恢复备机故障----')
            time.sleep(10)
            self.log.info("----清除磁盘满故障 ----")
            clean_cmd = f'rfile_full where(diskname={self.DISK_NAME})'
            clean_result = self.com.cfe_clean(self.sta1_root, clean_cmd)
            self.log.info(clean_result)
            self.assertIn(self.constant.CFE_DISK_CLEAN_SUCCESS_MSG,
                          clean_result)
            self.log.info("----获取备机磁盘占用情况 ----")
            df_cmd = f"df -h {macro.DB_INSTANCE_PATH}"
            self.log.info(df_cmd)
            df_result = self.sta1_root.sh(df_cmd).result()
            self.log.info(df_result)
            self.USED_PERCENT = df_result.splitlines()[-1].split()[4].strip()
            self.assertTrue(self.USED_PERCENT != '100%')

            self.log.info('----6、重启备机----')
            self.pri_sh.startDbCluster()

            self.log.info('----查看主机query，同步是否正常----')
            self.pri_sh.check_location_consistency('primary',
                                                   self.node_num,
                                                   self.max_time)
            self.log.info('----查询主备状态----')
            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

            self.log.info('----restore进程是否异常----')
            restore_ps_cmd = 'ps ux | grep gs_restore | grep -v grep'
            self.log.info(restore_ps_cmd)
            restore_ps_result = self.pri_dbuser.sh(restore_ps_cmd).result()
            self.log.info(restore_ps_result)

            self.log.info('----7、restore结果验证----')
            # 等待restore执行完成
            restore_thread.join()
            restore_result = restore_thread.get_result()
            self.assertNotIn(self.constant.RESTORE_FAIL_MSG, restore_result)

        finally:
            self.log.info('----11、restore执行完成后，关闭极致RTO----')
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_parse_workers = 1')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_redo_workers = 1')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'hot_standby=on')
            self.assertTrue(msg)
            # 重启数据库配置文件生效
            self.pri_sh.stopDbCluster()
            time.sleep(2)
            self.pri_sh.startDbCluster()

            # 校验备机是否完成数据同步
            self.log.info('校验备机是否完成数据同步')
            flag_1 = self.sta_1_sh.check_location_consistency('standby',
                                                              self.node_num,
                                                              self.min_time)
            self.assertTrue(flag_1)
            flag_2 = self.sta_2_sh.check_location_consistency('standby',
                                                              self.node_num,
                                                              self.min_time)
            self.assertTrue(flag_2)

            self.log.info('----12、查询主备数据是否一致----')
            nodes_tuple = (self.pri_dbuser,
                           self.sta1_dbuser,
                           self.sta2_dbuser)
            flag = self.com.check_data_sample_by_all(r'\d', *nodes_tuple)
            self.assertTrue(flag)

            table_dict = self.com.format_sql_result(
                self.pri_sh.executDbSql(r'\d'))
            table_name = table_dict.get('Name')
            for name in table_name:
                select_sql = f'select count(*) from {name};'
                flag = self.com.check_data_sample_by_all(select_sql,
                                                         *nodes_tuple)
                self.assertTrue(flag)

    def tearDown(self):
        self.log.info('----删除tar文件----')
        self.pri_dbuser.sh(f'rm -rf {self.file_name}').result()
        self.log.info(self.pri_dbuser.sh(f'ls -l {self.file_name}').result())

        self.log.info("----删除restore库----")
        drop_db_result = self.pri_sh.executDbSql(self.drop_db_cmd)
        self.log.info(drop_db_result)

        df_cmd = f"df -h {macro.DB_INSTANCE_PATH}"
        self.log.info(df_cmd)
        df_result = self.sta1_root.sh(df_cmd).result()
        self.log.info(df_result)
        self.USED_PERCENT = df_result.splitlines()[-1].split()[4].strip()
        if self.USED_PERCENT == '100%':
            self.log.info('----异常中断，磁盘故障未恢复处理----')
            clean_cmd = f'rfile_full where(diskname = {self.DISK_NAME})'
            clean_result = self.com.cfe_clean(self.sta1_root, clean_cmd)
            self.log.info(clean_result)

        self.log.info('----校验刷脏页是否完成----')
        self.pri_sh.check_whether_remain_dirty_page()

        self.log.info(
            '----Opengauss_Reliability_RTO_Hardware_Disk_Case003:执行完毕----')
